Draft-adjuster



l. V. YEROUS DRAFT ADJUSTER'.

APPLICATION r1LED1uNE17,191.

Q11 n Y llzfswrowa u @ww/Mofa @wi/wm To all inkom/'15 may concern ISAIAHV. YEAROUS, OF CLARINDA, IOWA.

DRAFT-ADJUSTEB.

Specification of Letters Patent.

Patented Oct. 21, 1919.

AppIication filed .Tune 17, 1918. Serial No. 240,435.

Be it known that ll, IsAIAI-I V. YnARoUs, a citizen of the UnitedStates, residinv at (larinda, in the county of Page and Sctate ot' lowa,have invented certain new and useful Improvements in Draft-Adjusters;and I do declare the -following to be a full, clear, and exactdescription-otv the invention, such as will enable othersskilled in theart to which it appertains to make and use the same.

This invention relates to draft adjusters, and it relates moreparticularly to an i1nproved means 'for determining the path ottravel ofa gang-plow or other iniplen'lent to be drawn or trailed by a lighttractor or other draft device.

()ne object of this invention is to provide a drat't adjuster with amore convenient and easy adjustment than is provided for other devicesof this character;

Another object is to provide a drat't adjuster having a greater range ofadjustment' than other known devices of the kind;

Another object is to provide a draft adjuster which is exceedinglystrong and durable and has itsl working parts where they can be easilyreached Jfrom the drivers seat, for oiling, these working parts beingout of position for collecting sand and grit from the wheels ot' theimplement being trailed;

Another object is to simplify and cheapen the construction by providinga simple and etiicient element that forms a combined pivot and guide.

Other objects and advantages may become apparent to persons who read thefollowing details of description in connection with the accompanyingdrawings, in which:

Figure 1 is a top plan view illustrating my improved draft adjuster inits operative connection with a traction engine and gang plow;

Fig. 2 is a side elevation of my improved dra-tt adjuster; and.

Fig. 3 is an enlarged vertical sectional vie f' along the line 3--3 otFig. 1.

Referring to these drawings in detail, in which similar referencecharacters correspond with similar parts throughout the several views;the rear end of a light tractor and a somewhat diagrammatic view of agang-plow 6 are shown merely to illustrate the use and operation of myinvention, and these parts 5 and 6 will not be described in furtherdetail.

The draft adjuster or adjustable draft device which constitutes myinvention, consists ot' a bar 7 which is secured to the gangplow at 8,is apertured at 9 and 10, and is disposed horizontally and transverselyot the path of travel of the traction engine and gang-plow; a. draw-bar11 having its rear end adjustably connected to. the Atransverse bar 7 bymeans ot' a bolt-or pivot 12 which is interchangeable in the apertures9, the front end ot this draw-bar being pivoted at 13 to the rear end oia pivoted link 5 on the tractor; a brace bar lelwhich is connected by abolt or pivot 15 to the har 7, the bolt or pivot 15 beinginterchangeable in the apertures 10, the 'front ot the bar 1-1 beingslotted at 1G and extending diagonally over the. front end of the bar11; a connecting element which is generally designated by the miniera]17 in Figs. 1 and 2 and shown in detail in Fig. an operating link 18having its front end pivotally connected to the connecting element 17;an adjusting lever 19 which has its lower end pivoted at .20 to the rearend ot the link 18; and a toothed segment 21 to which the lever 19 ispivotally secured at 22. The segment-21 is secured by rivets or bolts tothe middle portion of the brace bar 11, and an ordinary form otl detent24 is interchangeably engaged with the teeth ot the, segment 21, forholding the lever 19 in its dili'erent adjustments.

The connecting element 17 comprises a shank 25 which has an elongatedhead ZG at one end and external screw threads at its other end, the head26 being apertured to receive a cotter pin 27, a shoulder 28 beingprovided at the connection ot the head and shank; a sleeve 29 whichextends through the slot 1G and receives the shank 25, the length ofthis sleeve being slightly greater than the thickness ot the bar 14; a.washer 30 seated on the sleeve 2S); and a nut 31 engaging with thethreaded end ot' the shank and cooperating therewith and with theelements 28, 29 and 10 :tor clamping` the upper and lower sides of thebar 11 through which it extends. lt will he seen, therefore, that theconnecting element 1.7 is securely and inimovably engaged with the bar1.1, that is,

the elements 11 and 17 are rigidly united in such relation that the axisof the shank Q5 is iinzaj'mhle ot being accidentally moved `out of itsrightangled rela-tion to the length of the bar 1l; and therefore thepivot element Ztl and guide elements 25, tl and :lll will not Causeundue friction or hindine' aetion against movement of the bars lil and11% with relation to the har .11.

The har Il crosses over the har ll and slides thereon to an extentivhieh may he limited hy the length of the, slot 1G or the swing` ot'the lever 19. the latter heing in rear .ot the driver`s seat yvhieh isindicated at r. The parts u'liif'h have the greatest rubbingy movement.viz.. the parts itl. Z2 and the slotted' end otl the hai' l-l, areremote troni the yvheels ot the tractor and ot`the gang-plow, so thatthey will not aeeumulate sand and f i'iit from the vvheels. and at thesame. time, these working parts are within easy reach ot' the driver onthe seat 3". so that he mayl apply oil'or other lulnieant duiekly andeonveniently when needed. rl`l1is feature is a very important one. andis in eontradistine tion to other known deviees oll this character7 asit not only Jaeilitates the easy operation of adjusting' the device butalso greatly prolonjgs the usefulness of the device. Another importantleature. is that the link 1S is relatively' short`r and therefore, itneed not be heavy in cross section 'as it would have to he it' it werelong. for it is well known that a long' har is more easily bent than ashort one ot equal Cross seetion.

The link In'. being below the hars i1 and l-l. necessitates theextension of the lever l? lielou the said liars ll and lvl and thisarrangement allows the use ot' a relatively long and easily operatedlever without the ueees sity tor extending the lever ahove the shouldersot a driver or operator on the seat 3*. therehy providing` theadditional important features, viz.. maximum convenience and ease ofoperation.

From the foregoing diselosure. it will he ,seen that the details ol:eonstruel'iou and arlrangement otl this deviee eomhine to nro'- duee asimple, Convenient and thoroughly practical device for the purposespeeitied.` However` it is not intended to limit this inventionto theseexaet details ot' construction and arrangement ot' parts, hut l amentitled to fuake minor changes Within the scope ot' the inventive ideasdisclosed .in the foregoing description and 'following claim.

What l claim as in v invention is:

in a dra tt adjusterr` the Combination of a har adapted to he secured toan implement;V

to he trailed,` a draw-bar pivotallyY connected to the lirst said harand being adjustable therealong. a hraee, bar having its rear endpivotally eonni-eted to and terniimitingrI at the tirst said har andheingadjustable therealong and havingaslot through itsl t'ront endportion7 a holt having its shank extending vertically' through saiddraw-bar and through the slot of said brace-bar and having an axiallyvvextended head helow said draw-har7 a link pivotally connected to saidaxially extended l lad` a sleeve on said shank and Within said slot to`guide the brace-liar`r means on said shank eti-acting` with the headot' said boltand with said sleeve for holding` said bolt and sleeverigid with said draw-har, said means also securing said hraee. har inits sliding' engagement with said sleeve, a segment loeated on `themiddle part ot said hraeehar and thus being remote from the tirs( saidbar and trom the draw-bar, and a lever pivoted het\ \'een its ends tosaid Segment and having its lower end pivotall)v Connected to said linkand being cooperative, w '1th said segment and said bolt for adjustingsaid draw-har angularly with relation. to the lirst said liar, wherebythe several elements may he eonyf'eniently adjusted and whereby the`several important features speeilied are obtained.

In testimony Whereetl l have hereunto set my hand.

isxixi-i v. Yeaiiotisj

